The Wheel Writer mounts directly to the spokes of your bike wheel (must be 20" or larger). As the wheels spin, the bright computer-controlled LEDs illuminate to create a dozen different images and patterns. Patterns include: flames, skull & cross bones, eightball, alien, spiral, bat, space invader and nuclear warning!
Also includes a real, working speedometer that shows your speed in miles per hour as you pedal! The faster you ride, the more awesome the effects look.
12 images and animations
Real, working speedometer
Super bright LEDs show up in the day and at night
Mounts directly to your spokes (20″ wheel and up)
Requires 3 x AAA batteries (not included)